The Screaming Frog SEO Spider is a small desktop program you can install locally on your PC, Mac or Linux machine which spiders websites' links, images, CSS, script and apps from an SEO perspective. It fetches key onsite elements for SEO, presents them in tabs by type and allows you to filter for common SEO issues, or slice and dice the data how you see fit by exporting into Excel.

WooRank's instant website review and SEO audit tool will help you to analyze and optimize your website.

The Google PageSpeed family of tools is designed to help you optimize the performance of your website. PageSpeed Insights will help you identify performance best practices that can be applied to your site, and PageSpeed optimization tools can help you automate the process.

Google Webmaster Tools is a no-charge web service by Google for webmasters. It allows webmasters to check indexing status and optimize visibility of their websites.

Google Analytics is a service offered by Google that generates detailed statistics about a website's traffic and traffic sources and measures conversions and sales.

Scan your site for dummy content. This tool that crawls up to 500 pages on your website and will email you a nice little report summarizing what a great job you’ve done or what pages on your website still have dummy text.

It lets you identify what about a web page is fast, slow, too big, what best practices you're not following, and so on.

Xenu, or Xenu's Link Sleuth, is a computer program that checks websites for broken hyperlinks.

Keyword Analysis Tools

Use the Keyword Difficulty tool to get at-a-glance competitive keyword analysis metrics.

Enter a keyword to get profitable keyword suggestions from our Free Keyword Tool.

Keyword Discovery compiles keyword search statistics from all the major search engines world wide, to create the most powerful Keyword Research tool.

Keyword Planner is like a workshop for building new Search Network campaigns or expanding existing ones. You can search for keyword and ad group ideas, get historical statistics, see how a list of keywords might perform, and even create a new keyword list by multiplying several lists of keywords together.

This tool allows for the use of variables in different columns, automatically multiplying and combining into a new phrase, but it’s only useful for PPC campaigns.

Get keyword ideas with Ubersuggest the free keyword suggestion tool that makes good use of different suggest services.

Keyword analysis tool offered by Moz. You will get 20 free queries per month.

Content Creation

The content on your site tells your visitors who you are, encourages them to dig into your site.Content
marketing efforts can be an uphill battle if you don't have the right tools in place to get the job done.

Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your articles are original.

Feedly is a news aggregator application for various Web browsers and mobile devices running iOS and Android, also available as a cloud-based service. It compiles news feeds from a variety of online sources for the user to customize and share with others.

IFTTT is a service that enables users to connect different web applicationstogether through simple conditional statements known as "Recipes". IFTTT enables users to create and share

Storify is a social network service that lets the user create stories or timelines using social media such as Twitter, Facebook and Instagram.

Helps you create error free content. It is one of the best grammar checking tools available.

Organize your notes and write-ups.

Pixabay offers a huge collection of copyright-free images and videos that you can use anywhere.

Social Media Management and Analysis

Social management platform that empowers enterprise businesses to use the social web to listen and learn about customers in order to build meaningful, deep, and relevant business connections across multiple social networks.

A tool to help make it easier to know whether your photo meets facebook's text policy guidelines!

Social Mention is a social media search engine that searches user-generated content such as blogs, comments, bookmarks, events, news, videos, and microblogging services.

Social Bakers is the most popular provider of social media analytic tools, statistics and metrics for Facebook, Twitter, Google Plus, YouTube and LinkedIn.

HootSuite helps teams engage with audiences and analyze campaigns across multiple social networks from one secure web-based dashboard.

Talkwalker is an easy to use and incredibly powerful social media search, monitoring and analytics tool. It delivers in-depth insights on any given search term and sophisticated metrics on owned and earned media performance.

Buffer makes it super easy to schedule social media posts. Posts added to your Buffer queue will be automatically shared according to your set schedule.

All-in-one platform for social media planning and client collaboration.

Klout can help you make an impact on social. Join today to share original content and measure results.

SEMrush tracks an immense amount of organic data in Google and Bing SERPs. You can therefore see where your competitors are ranking in the top 20 Google and Bing results for the top 106+ million organic keywords.

AdRoll is the retargeting platform and makes retargeting simple and profitable for brands of all sizes.

Rocket Fuel delivers a leading programmatic media-buying platform at Big Data scale that harnesses the power of artificial intelligence (AI) to improve marketing ROI in digital media across web, mobile, video, and social channels.